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Vortex generators and laminar flow look very interesting but at what airspeed do they really come in effect? I'm afraid that this is another case of saving X seconds over Y distance, traveling at an average of 50km/u which is unlikely for most of their users or anyone cycling in general. Zipp is ofcourse interested in maintaining the high-end image of their rims (not their hubs ) and looking to add some extra bling-factor to their wheels now copies can be bought cheap. I'm curious what someone like Paul Lew would say about this.

I'm afraid that this is another case of saving X seconds over Y distance

Seems to be like they're pushing the added stability more than the speed. Their quoted drag saving over a 404NSW is tiny - 2 watts at less than 10d yaw? Hardly enough on its own to justify the extra $1k.

TBH though purely on looks I think they're brilliant. First set of Zipps that've made me think "I'd love a pair of those!" since the original 404s that Frank Schleck rode to victory on the Alpe. I won't get them for the same reason I didn't then - cost. Back then because I was poor, now because every other 50 - 60mm wheel is already so good in crosswinds that the extra price of these is absolutely not worth it to me.

Seems like wheel advertising is starting to mimic the shaving world where each razor is supposed to be the best it can possibly be and super great to use - until the new one comes out and they say "Hey, remember how our old razor felt like flaying the skin off your face with a rusty spoon? Well with our new one it feels like snuggling a kitten against your cheek!" Now it seems like all wheels are advertised as extremely easy to handle, until the new one comes out and they say "Hey, remember how our old wheels feel really gusty and grabby? Well this new one..."

A: "Ok guys, everyone is basically making wheels just like ours, 40 to 50mm deep, same weight, pretty much same aero performance, but they're cheaper than us. This doesn't look good and everyone's bored of dimples. Ideas?'B: "Maybe make a kind of sawtooth pattern in the rim, spout some marketing guff, then double the price?"A: 'Genius! Who said that?! Double his salary!"C: "Yeah but wouldn't we just lose the highly aero spinning (rotational) effect of a smooth, linear rim?"A: "What? Who said that?! You're fired!"

Seems like wheel advertising is starting to mimic the shaving world where each razor is supposed to be the best it can possibly be and super great to use - until the new one comes out and they say "Hey, remember how our old razor felt like flaying the skin off your face with a rusty spoon? Well with our new one it feels like snuggling a kitten against your cheek!" Now it seems like all wheels are advertised as extremely easy to handle, until the new one comes out and they say "Hey, remember how our old wheels feel really gusty and grabby? Well this new one..."

What's going to stop some manufacturer in a certain part of the world from emulating the shape and selling it for $400? I understand that Zipp supposedly spent years on R&D and needs to recoup the cost, but is the resulting design that difficult to realize in production?

Absolutely disgusting. For that price, i could get AX Lightness, Tunes, RZRs, Extralites, Rovals or even on sale Lightweights, all of which provide similar rim depth for far less weight (and much cheaper in some instances). Zipp can suck it

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